I then highlighted the maximum point, and recorded this value as the maximum tension. The weight of the cart as well as the coefficient of friction affect the magnitude of the frictional force. Unfortunately because of the short length of the wooden plank and inaccurate measuring equipment, the results will be inaccurate and in a science land we would have better luck at accurate Computer beats human champ in ancient Chinese game •Simplifying solar cells with a new mix of materials •Imaged 'jets' reveal cerium's post-shock inner strength Sep 22, 2009 #2 turin Homework Helper navigate to this website
This is the typical equation to find the force of gravity on an object butwas used in this investigation to accurately find the normal force of the wooden board onthe wooden The system returned: (22) Invalid argument The remote host or network may be down. Friction Experiment Sep 22, 2009 #1 chrisfnet 1. This could be fixed by making sure (or putting in the lab sheet) that the person pulling the force sensor starts out with very little pulling.
The more particlized* the surfaces the more friction which is formed between the two surfaces. 3. When we’re observing object for measuring data these errors may happen. The car could also be designed so that when driving at a constant speed, the tires act correctly on different road conditions and are safe to drive with.
For the second question: What is the physical meaning of a coefficient of static friction that is less than the coefficient of kinetic friction? These are small, we expected the kinetic to be small but the static was much smaller than we had predicted. View Full Document 10. Discussion Of Friction Experiment Sample Calculations for Coefficient of Static Friction (μ): Sample Calculations for Coefficient of Kinetic Friction (μ): Analysis: Compare the slope of line with calculated μs average (% difference).
The balance scale was not properly calibrated therefore gravity by its standards was 9.6 m/s2 [down]. Static And Kinetic Friction Lab Error Analysis These particlized* surfaces are the cause of friction. The direct proportional relationship between the Ff and the Fn was proven in our lab. However our coefficient of friction was slightly lower at 0.2025.
chrisfnet, Sep 22, 2009 Sep 22, 2009 #4 chrisfnet I'm still really confused about this. Sources Of Error In Static And Kinetic Friction Lab Can't complete question. Observations: Figure 1 Observations of the Kinetic Friction between the Wooden SurfacesTrialm block (kg)*m added (kg)m total (kg)F normal (N) F applied (N) ** 10.35300.3533.460.7020.3530.1000.4534.440.7530.3530.2000.5535.421.040.3530.4000.7537.381.350.3531.001.35313.262.4It is important to note the possibility The coefficient of friction is affected by the force of friction and the normal force (weight).
Pull the sleigh with a constant velocity up the board, writing down the force applied. 8. guest Join | Help | Sign In HonorsPhysicsRocks Home guest| Join | Help | Sign In Wiki Home Recent Changes Pages and Files Members HonorsPhysicsRocks Home Group Lab Reports HP Midterm Sources Of Error In Static Friction Experiment These values can be used in the friction equation to find the constant values of slope. 11. Friction Experiment Lab Report Yes, my password is: Forgot your password?
This knowledge led to our establishment of these hypothesis. useful reference Next, we will highlight the maximum point and record it as maximum tension, and then repeat twice for each mass, and repeat each step for larger masses. Forums Search Forums Recent Posts Unanswered Threads Videos Search Media New Media Members Notable Members Current Visitors Recent Activity New Profile Posts Insights Search Log in or Sign up Physics Forums But I don't know what happens exactly if the string isn't level... Coefficient Of Static Friction Lab Sources Of Error
Repeat step 7 for at least one other height, and with at least one weight attached at all heights. 9. We also ignore the contribution of friction by the pulley and the string. We also could have thrown the data off slightly by pulling the string too quickly causing unnecessary acceleration. my review here The differences in kinetic and static friction for cork on aluminum are significant.
We had to use larger weights and in most instances we think we were only accurate +/-10g. Precaution In Friction Experiment This is a difference of .084, which is large, given that most coefficients of friction are between 0 and 1. Splitters and particles that fall off the sleigh and ramp during the duration of our experiment cause the equipment to be ever changing and thus giving us a variance in the
Course Hero is not sponsored or endorsed by any college or university. What are other sources of error? Once I collected my data, I ended the experiment, and selected the straight line part of the graph that I wanted more information on. Lab Report Physics Matriculation Experiment 4 Friction Why should the coefficient of kinetic friction be less than the static one?
Constant Velocity trial 1 trial 2 trial 3 trial 4 trial 5 trial 6 Force of friction Ff 1 (N) 0.51 1.83 0.30 1.64 0.87 1.45 Force of friction Ff Also, when an object is at rest the two surfaces have a chance to fully interlock on the microscopic level. For the second part of my hypothesis, the graph clearly illustrates that I was correct. get redirected here Stay logged in Physics Forums - The Fusion of Science and Community Forums > Science Education > Homework and Coursework Questions > Introductory Physics Homework > Menu Forums Featured Threads Recent
The coefficient of friction between the rubberized floor and the wood would be much less because the rubberized floor has less particlized*, bumpy surface as compared to the very particlized*, bumpy Discuss if your measured results fall within the range of theoretical values. Write down the force needed to move the sleigh from the stationary position. 6. The frictional force and the weight of the cart affected the magnitude of the coefficient of friction during this lab. 4.
This equation worked correctly because the wooden block never movedin a y direction (up or down) so the net force in the y direction must be 0. Please try the request again. The friendliest, high quality science and math community on the planet! It was hypothesized that anobject’s mass will not have an effect on the coefficient of friction.
Your cache administrator is webmaster. One example of these principles being for the design of cars and their tires. Generated Fri, 28 Oct 2016 22:43:45 GMT by s_sg2 (squid/3.5.20) We will then press "Start" on DataStudio, and gently pull the force sensor with a constant speed parallel to the surface, which will in turn pull the cart.
The variance of the points on our graph is due to the sources of error outlined above. Conclusion: The objective of this lab was to find the coefficient of static and kinetic friction between surfaces (in my case, cork and aluminum) and to determine the relationship between friction After the weight of the wooden block was recorded, it was placed on the horizontal wooden board and connected to the spring scale. The rounding error is produced by human.
At the end of the experiment, he's asked us three questions. The website we referenced above also confirmed this... TERM '09 PROFESSOR TAGS Conservation Of Energy, Energy, Inertia Click to edit the document details Share this link with a friend: Copied! The friction on the pulley and the axle will affect the result of the value of the This preview has intentionally blurred sections.
I've got answers to two of the three (could someone look at those and give critique, or suggestions for addition?) The first question is the one I'm having a little trouble This coefficient would be only accurate for the similar situation. 2. Generated Fri, 28 Oct 2016 22:43:45 GMT by s_sg2 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.9/ Connection